silver-ymz commented on code in PR #3004:
URL:
https://github.com/apache/incubator-opendal/pull/3004#discussion_r1314457175
##########
bindings/cpp/tests/basic_test.cpp:
##########
@@ -86,6 +93,41 @@ TEST_F(OpendalTest, BasicTest) {
EXPECT_FALSE(op.is_exist(file_path_renamed));
}
+TEST_F(OpendalTest, ReaderTest) {
+ std::string file_path = "test";
+ constexpr int size = 2000;
+ std::vector<uint8_t> data(size);
+
+ for (auto &d : data) {
+ d = rng() % 256;
+ }
+
+ // write
+ op.write(file_path, data);
+
+ // read
+ auto reader = op.reader(file_path);
+
+ auto read = [&](std::size_t to_read, std::streampos expected_tellg) {
+ std::vector<char> v(to_read);
+ reader.read(v.data(), v.size());
+ EXPECT_TRUE(!!reader);
+ EXPECT_EQ(reader.tellg(), expected_tellg);
+ };
+
+ EXPECT_EQ(reader.tellg(), 0);
+ read(10, 10);
+ read(15, 25);
+ read(15, 40);
+ reader.get();
+ EXPECT_EQ(reader.tellg(), 41);
+ read(1000, 1041);
+
+ reader.seekg(0, std::ios::beg);
Review Comment:
This is cpp std function
https://en.cppreference.com/w/cpp/io/basic_istream/seekg
I guess its meaning is `seek get area`.
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